phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b23e01d778a6faa446a00c666f522af2' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b23e01d778a6faa446a00c666f522af2', -1, 1768221661, 1768221661, 'd849d83d', -9, 0, 0)

Line : 187
File : sessions.php